I've had my 2004 Cayenne S (manual) for 7 years, and it's done 96,000 miles, when I got it the mileage was about 30k. I go against the flow and have it serviced every year, although based in North Yorkshire and have access to some smart specialist service centres I use Porsche Centre Silverstone to look after it, they do me a great deal, and I trust them. About 2 years ago I was advised that it was rare for me to not to have had coil pack problems, so I had them all replaced at the 80k service interval. A point to note, many items such as the battery, exhaust, clutch are still original, all I have replaced are tyres, brakes and the cable that operates the hand brake when you pull it from the dash, and a switch that operates when you push on the foot pedal for the handbrake. I was advised not to buy air suspension, so I didn't. I must say that the car really impresses me, it gets most use over the winter months, and is a pleasure to own.
Andrew Mearns.